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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-03-04 17:55:49 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-03-12 14:09:02 -0700 |
| commit | 3f944adb9d1ca912902783e7aede2a5b5c19a605 (patch) | |
| tree | 2ab5039926992d2497f7ba626f2e10c3666ca351 /Documentation/RCU/lockdep.txt | |
| parent | 4357fb570b3709c145384065d04b698a30dc722e (diff) | |
rcu: Documentation update
This commit applies a few updates based on a quick review of the RCU
documentations.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'Documentation/RCU/lockdep.txt')
| -rw-r--r-- | Documentation/RCU/lockdep.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/RCU/lockdep.txt b/Documentation/RCU/lockdep.txt index a102d4b3724b..cd83d2348fef 100644 --- a/Documentation/RCU/lockdep.txt +++ b/Documentation/RCU/lockdep.txt @@ -64,6 +64,11 @@ checking of rcu_dereference() primitives: but retain the compiler constraints that prevent duplicating or coalescsing. This is useful when when testing the value of the pointer itself, for example, against NULL. + rcu_access_index(idx): + Return the value of the index and omit all barriers, but + retain the compiler constraints that prevent duplicating + or coalescsing. This is useful when when testing the + value of the index itself, for example, against -1. The rcu_dereference_check() check expression can be any boolean expression, but would normally include a lockdep expression. However, |